Talk:Cascode

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[edit] Reducing distortion

Cascode's are also useful for reducing distortion. Might be worth a mention. http://www.passlabs.com/downloads/articles/cascode.pdf Rogerbrent 04:39, 11 March 2006 (UTC)

[edit] Mosfet cascodes? hah

Those are not cascodes at all. The first one, as it's been noted, it's just a source degenerated common source amplifier. The second one is obviously the same thing, using a transistor instead of the resistor, but analytically equivalent. It would be a cascode if Vb2 were the input, and Vb1 a constant voltage. 22 February 2007

I agree that there are significant problems with the diagrams and such in this article. To be a cascode, the input is to the base/gate/grid of one active device whilst the collector/drain/plate of that same device is connected to the emitter/source/cathode of a second device where (most importantly), the base/gate/grid of the second device is at AC ground such that the second device operates as a common base/gate/grid amplifier. When connected this way, the first device is a trans-conductance amplifier (input voltage gives an output current) which feeds a trans-resistance amplifier (input current gives an output voltage. The key advantages being linearity and large bandwidth. I'll think about how to fix this article. Alfred Centauri 02:03, 8 March 2007 (UTC)

Wouldn't the best fix be to simply REMOVE the first section on "Mosfet Cascodes"? 14-03-2007

It's going to take more than that. The first two diagrams are not cascodes or, at the least, its can't be said that they are cascodes. For example where is the output to be taken from? Are both of the inputs used or just one? If just one, which one? I'll delete those images and the MOSFET section for now. I just don't have the time right now to fix this article completely. Alfred Centauri 20:34, 14 March 2007 (UTC)